Carbonization of crosslinked polyimides with kinked structures leads to carbon molecular sieves with bimodal free volumes, enabling both a high molecular-sieving ability and gas permeability.
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Hu, L., Lin, H. Bimodal free volumes uplift gas separation. Nat. Mater. 22, 10–11 (2023). https://doi.org/10.1038/s41563-022-01442-8
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DOI: https://doi.org/10.1038/s41563-022-01442-8
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